[time-nuts] distribution amplifier specifications

[Clive Green]

Our standard A5 distribution amplifier, > 12 years old has >90dB adjacent
out to out iso at 10MHz, -130dB non adj iso @5MHz & out to in >-110dB at 10MHz. in
to in (crosstalk is >90dB at 5MHz) Spur >-110, BB noise -148dBm/Hz, delay match
<2ns (or 300ps within a group of 4 ops), phase/temp of 10ps/C, open/short
any o/p gives phase change 0.5ps, however, most important specs are PN @1Hz
-140dBc/Hz, 10Hz -150dBc/Hz, >100Hz -165dBc/Hz and AVAR <E-13/s, <3E-14/10s,
<E-14 at 100s. This old design draws much on the NIST BJT design (Fred Walls et
al) and should be improved using later components. We need this performance
with modern Active Noise Filters after Cs and in general Maser based lab
work.

 

Clive Green

CEO 

Quartzlock 

+ Gothic, Plymouth Road, Totnes, Devon. TQ9 5LH England

(: +44 (0) 1803 862 062 7: +44 (0) 1803 867 962

š:  <mailto:nlaw at quartzlock.com> cgreen at quartzlock.com ü:
<http://www.quartzlock.com> www.quartzlock.com

Skype: clive.green.skype Messenger: cgreen at quartzlock.com

Registered office: Gothic, Plymouth Road, Totnes, Devon. TQ9 5LH England
Registered in England

 P Think Environment, print only if necessary.

 

This is an e-mail from Quartzlock (UK) Limited, its contents (including all
attachments) and any files transmitted with it are confidential and intended
solely for the individual(s) to which it is addressed and may also be
privileged. It may not be copied or printed by anyone other than the
addressee and may not be disclosed or distributed in any way.  If you have
received this e-mail in error please inform Quartzlock (UK) Limited and
delete it from your mailbox or any other storage devices.

 

Although this e-mail and any attachments are believed to be free of any
virus or other defects which might affect any computer or IT system into
which they are received, no responsibility is accepted by Quartzlock (UK)
Limited or any of its directors, staff or associated businesses or contacts
for any loss or damage arising in any way from the receipt or use thereof.

 

Opinions, conclusions and other information expressed in this message are
not given or endorsed by Quartzlock (UK) Limited unless otherwise indicated
by an authorised representative independent of this message.